Lookup Terms Filter ignores the routing parameter
fixes #3233
The `geohash_cell` filter now adapts the format of other geo-filters. The oject fieldnames match the fieldnames document names automatically. This invalidates the `field` field in previeous versions. The value these fields value is a `geo_point` value (all formats supported) which is internally translated to a geohash. Since those points alway have a maximum precision (level 12) a `precision` definition has been included. This precision can either be defined as *length* of the geohash-string or as *distance*. It's assumed the a distance without any unit is a geohash-length.

```
GET 'http://127.0.0.1:9200/locations/_search?pretty=true' -d '{
    "query": {
        "match_all":{}
    },
    "filter": {
        "geohash_cell": {
			"pin": {
				"lat": 13.4080,
				"lon": 52.5186
			},
            "precision": 3,
            "neighbors": true
        }
    }
}'
```
Closes #3229
Made the minimum score only active when executing the main query and not during the context rewrite phase.

This fixes parent/child queries when using minimum_score.

Closes #3203
A small doc change to reflect StreamOutput.writeVInt() does support negative numbers but not efficiently. StreamOutput.writeVLong & StreamInput.readVLong really support it.

This is to better describe the current situation. We probably want to normalize these methods and potentially add optimization/support for -1 values.
No need to fetch the freq for term filter
Terms Filter Lookup: When on cache key defined, use terms values as key to filter cache
closes #3240
Terms Filter Lookup: Allow to disable caching of lookup terms
closes #3241
add 0.90.3
fixed ShapeFetchService. closes #3242
Added support for PatternReplaceCharFilter

PatternReplaceCharFilter allows the use of a regex to manipulate the characters in a string before analysis

Closes #3197
Put Eclipse settings in the root directory.

This enforces that settings are taken into account whichever mean is used to
import the project into Eclipse (manual import, m2e, mvn eclipse:eclipse, ...).
Fix field number attribution to _version.

IndexUpgraderMergePolicy assumed that field numbers were dense and that
fieldInfos.size() was a free field number. This can however be wrong for a
segment which doesn't have one or more fields that some older segments have.

Close #3237
PluginManager fails with unknown command when passing url or verbose parameters
Closes #3245.
Merge integer field data implementations.

This commit merges field data implementations for byte, short, int and long
data into PackedArrayAtomicFieldData which uses Lucene's PackedInts API to
store data.

Close #3220
NPE in PluginManager when asking for list on non existing dir
Asking for list of installed plugins with no existing plugin dir:

```sh
$ bin/plugin --list
```

It causes a NPE in PluginManager.
Closes #3253.
add running the tests in headless mode in maven
Initial distributed percolator version.